Lubricating system



Nimh 6, 192s?. www;

H. J. MURPHY ET AL LUBRICATING SYSTEM Filed March 14, 1922 64 Reign- @e Patented Mar. 6, 192e.

. UNITED fsrArss c ,1,551,904 PATENT oFFrcE, j

'HOWARD J'. MURPHY, 0F READING, AND MOSES F. CARR, OF BBOOIKLINE, MASSACHU' SETTS, ASSGNORS, BY `ISLESII ASSIGNMENTS, TO THE' BASSICK MANUFACTURING CMPANY, OF CHICAGO, ILLNOIS, A. CORPORATION OF DELAWARE.

Lunnrcarrne SYSTEM.

application mee March u, i922. serial No. 543,64.

This invention pertains to improvements in lubricating systems. It 1s among theobjects of the invention to provide a: convenient system for connecting and disconnectinga 6 source of lubricant under pressurewith lu-V brcating cups or nipples carried by or connected to the parts to *be lubricated.'

In the drawingswhich show la preferred form of one embodiment of the invention:

Figure l is aside elevation of a preferre form of lubricating apparatus; f

Fig. 2 is a section through the lubricant'- discharging and lubricant-receiving portions of the preferred form of apparatus illusl trat-,ed in Fig. l; o

Fig. 3 is a side'elevation of the lubricantreceiving parts illustrated .in Fig. l, the lubricant supply apparatus removed 'there--` from;

Fig. i is a section on the llne 4 4 of Fig. 2.

Figs. 5, 6 and 7 illustrate respectively the spring, ball and a longitudinal section through t e body portion of the preferred 2a form of lu ricant-receiving cup or nipple;

Fig. 8 is an end elevation of the lubricantreceiving nipple; Fig. 9 isa. section, partly in elevation, through that portion of the nozzle illus- 3c trated in Fig. 10;

Figs. l through 19 illustrate parts of the preferred form of nozzle shown in section in Fig. 2; and

Figs. 20, 21 and 22 are diagrammatic sec- 35 tions on the line 20-20 of Fig. 2, illustrating the relation of the parts of the preferred form of nozzle illustrated relative to eaclr other and relative to the lubricant-receiving cup or nipple during coupling or uncoupling 4o operations.,

Referring to the drawings and to the preferred form of the invention selected for ilrlustrative purposes, we have shown a lubricant-receiving cup or nipple 25 shown in side elevation in Fig. 3, the body of which is shown in section in Fig. 7 and in endelevation in Fic'. 8. The preferred form of cup or nipple is provided with a lubricant-receiving opening 26 at one end thereof and preferably includes a cylindrical portion 27 adjacent the lubricant-'receiving opening and is provided with projections a jacent the end of the cup or nipple having the lubricant-receiving opening, `these projections in the preferred form of the. invention illustrated bein formed by making the cross-secton of the ody of the cup or ni ple polygonal, being square as illustratedp v lugs or projections 28 having extended lateral faces and providing underlying faces of considerable area. y polygonal faces are preferably tangential to the main cylindrical portion ofthe cup or nipplebody, the other end of lsaid bod being threaded at 29 for engagement wit i the part to be lubricated, herein shown as abolt 30. In the construction illustrated, the angled connection 3l is provided between the cup or nipple and the' bolt 30,"but it is Yobvious that this angled connection is only useful in certain places.

Cooperating with the preferred form of cup or mpple hereinbefore described, we have provided a lubricant gun including a barrel 32 containing lthe usual lubricant-expeiling plunger 34.- and having a screwthreaded shank 35. It .will be understood, however, that so far as many aspects of the invention are concerned, any type 'of .lubricant expelling mechanism may be used. Co-

to provide i The side faces and the y operating with the lubricant gun or other suitable supply of lubricant under pressure, we provide a nozzle which may include several parts but which preferably provides an openlng at the end thereof herein shown as square (see Fig. 11), there being provided within the nozzle a chamber adapted to` permit turning of the nozzle when it is entered over the cup or nipple, so that the -projections 28 on. the cup or nipple will overlie portions ofthe nozzle, such portions herein being shown as the flats 36. Within the outer portion of the nozzle, we preferably provide means for engagement with the projections `on the cup ornipple. In the preferred form of the invention illustrated, these engagingportions take the form of projections 37 fitting between the outer portion 'of the nozzle and the pro'ections on the lubricant cig), having 'exten ed bearings along two s1 es It is obvious that the number or shape of' these engagin portions mav be varied some1' what, part1cu arly if the shape of the projections on the cup or nipple 1s varied'. The

of the polygonal portion of the cup.

projections 37 serve to prevent rotation of the discharge nozzle 38 relative to the cup or nipple, and also, in the embodiment of the invention illustrated, serve to prevent turning of a sealing washer carried in' the discharge nozzle 38 and'adapted to press against that face of the lubricant cup or nipple which surrounds the lubricant-receiving aperture in the end thereof. These projections 37, because they do not rotate relative to the cup or nipple when the nozzle or other portions of the apparatus are rotated, mayconveniently be used as means for effecting opening and closure of valve means carried by the nozzle. In the preferred form of the invention illustrated, We have effected all these purposes very simply by makin the projection-engaging parts 37 integra with the discharge nozzle 38 Fig. .when the nozzle and cup or nipple' means, in the which'carries the sealing washer 39, and

which serves as a part of the valve mechanism.' The amount which the exterior poi'- tions of the nozzle may rotate relative to the cup or nipple may be conveniently limited by the provision of suitable stop means between the dischar e nozzle 38 and the exterior portions o the nozzle, such stop referred form of the invention illustrate com rising the screw 40 projecting from the discharge nozzle 38 and into a Slot 41 (Fig. 102 in the exterior portion of the nozzle. T e preferred form of valve illustrated is of the rotary type, the ports 42, 43 being provided in the discharge nozzle 38 and ports 44, 45 being provided in thevalve disc 46 having a projection 47 entering a recess inthe exterior portion of the nozzle so that, as the nozzle is turned, the valve disc 46 will be turned. Inthe preferred form of the invention illustrated, the ports 44, 45 bear the relation to the orts .42 and 43 as illustrated diagrammatical y in are not locked together. As the nozzle is turned clockwise relative to the nipple, the

.projections on the nipple overlie portions of the nozzle (as illustrated by the dotted squares in Fig. 21) before the ports 43 and 44 or the ports 42 and 45 begin to communicate. Completion of the coupling movement, so that the' ports are in full register and the projecting portions of the cup or ni ple are to'a considerable extent underlam by the end of the nozzle, brings the parts to the relative position illustrated in ig. 22. At this time the projection i4() will have engaged the end of theslot 41 so that the nozzle cannot turn any more in clockwise direction relative to the cup or nipple. In the preferred form of the invention illustrated, the valve disc 46 may be pressed toward its seat on the part 38 by a spring 60. When pressure is left on the lubricant in the barrel of the the lubricant pressure also will contri ute to a tight seat between the valve portions 46 and 38.

We prefer to provide for pressing the sealing washer 39 against the top of the lubricant-receivi cup or nipple byr lubricant pressure, an to this end we have provided a recess behind the' washer 3.) into which the lubricant may be forced so that the pressure of the lubricant acting on the surface of the washer which is away from the nipple may press the other surface of the Washeragainst the top of the nipple.

While the invention may for some pur poses be used in connection with a nozzle exibly connected to the-source of lubricant under pressure, either by flexible hose or suitable joints, etc., we prefer to have the nozzle so connected to the' gun barrel that the coupling between the lubricant gun and thecup or nipple may be eiected by rotary movement of the barrel, without the necessity for taking hold of the nozzle. This provides the additional advantage that it is only necessary to use one hand to operate the gun, the strain, tending to turn the barrel of the gun in clockwise direction as the lubricant is expelled, being taken by the cup or nipple. The polygonal cross-section of the cup or nipple where the projections thereon are provided, not only greatly increases the strength of the projections be vond that which is provided by the usual pins, but also facilitates passage of the nozzle of the gun over the cup or nipple, and in this respect is much superior to the usual arrangement of pins such as are used in bayonet joint connections in lubricating systems.

Assuming the gun and the cup or nip le to be detached from each other, the va ve will always be closed. When the nozzle of the gun is passed over the lubricant-receiving end of thc cup or nipple, the pressure of the lubricant in the barrelwill not be pressing on the washer 39 a'nd this washer will not, therefore, to any considerable cxtent interfere with the free entrance of the cup or nipple into the nozzle. During this entering movement, the projection-engaging parts 37 will have passed over two opposite sides of the squared portion of the nipple, and therefore there can be no relative turning movement between these projections 37, or parts connected thereto, and the cup or nipple. The exterior portions of the nozzle may, however, be turned, and as they are turned the projecting portions of the nippler will overlie the' lips 36 of the nozzle. The valve disc 46 will also have turned during the coupling|mov`ement until the ports are in registeras illustrated in Fig. 22, at which time further turning of the nozzle relative to the cup or ni ple in clockwise direction willbe prevente because the projection or screw 40 will have Areached the end of the slot.41. The cup or nipple will now support the gun while the'liandle 70 is turned to involving omission, substitution, alteration and reversal of parts, and even changes in the mode of operation, may be made Without ydepartinv from the scope of the invention,

which is best defined in the following claims.

We claim:

l. A lubricating system comprising -a cup or nipple having a lubricant-receiving opening in one end thereof, polygonal, lateral projections adjacent said end having said opening, in combination with a lubricant gun having a barrel, a lubricant expelling plunger and. a nozzle at one end of the barrel, said nozzle presenting at the end thereof an opening permitting passage of the nozzle over said end of said cup or nippley and over said projections, and v presenting portions that underlie said projections when the nozzle is turned relative to the cup or nipple,

.said nozzle rotatable by partial rotation of the lubricant gun barrel in one direction for quick engagement of said nozzle to said cup or nip le and by partial rotation in the other direction for quick disengagement of said nozzle from said cup or nipple,`rotary valve means operatively interposed between the interior of said barrel and said nozzle and valve opening and closing means actuated by rotation of said barrel.

2. A lubricating system comprising a cupv4 or nipple having a lubricant-receiving opening in one end thereof, tangential lugs or projections adjacent said end of said cup or nipple, in combination with a" lubricant delivering nozzle presenting portions adapted to underlie said projections when said projections are entered in said nozzle and said nozzlel is turned relative thereto, said nozzle presenting a sealing washervfor engagement with the end o'f said cup or nipple having a y lubricant-'receiving opening, and a `rotary valve having a part carrying said sealing washer.-

3. A lubricating system comprising a cup or nipple having a lubricant-receiving openingin one end thereof, tangentiallugs or projections adjacent said end of said cup or nipple, in combination with a lubricant delivering nozzle presenting portions adapted to underlie said projections when saidprojections are entered in said nozzle and said nozzle is turned relative thereto, said nozzle presenting a sealing Washer for engagement with the end of said cup or nipple having a lubricant-receiving opening, and a valved part carrying said sealing Washer, andv means for holding said valved part against rotation relative 'to said cup or nipple.

4. A lubricating system comprising a cup or nipple opening in one end thereof, lugs or projections adjacent said end of said cup or nipple, i

in combination with a lubricant-delivering nozzle presenting portions adapted to under.

lie said projections When 'said projections are entered in said nozzle and said nozzle is turned relative thereto,said nozzle presenting a sealing Washer for engagement with the end of said cup or nipple having a lubricant-receiving opening, and a valved' part carrying said sealing washer, said sealing washer carried by a part rotatable relative to said nozzle, said' sealing washer urged toward Said end of said cup or nipple by the pressure of the lubricant, and means for holding said valved part against rotation relative yto said cup or nipple when said Valve is open.

5. A lubricating system comprising a lubricant-receiving part having lateral projections providing both lateral and underlying faces, in combination With a lubricantdelivering nozzle readily attaehable to and detachable from said receiving part, said nozzle presenting an interior chamber to receive a portion of said receiving part and to permit turning of said nozzle relative to said receiving lpart until a portion of said nozzle underlies said lateral projections, and a part rotatably mounted in said nozzle and presenting faces engaging the lateral faces of Said lubricant-receiving part for limiting rotation of said nozzle relative to said lubricant-receiving part. f t

6. A lubricating system comprising alubricant-receiving part having an opening in one end thereof and a polygonal portion ad# jacent said end of said part, said polygonal portion presenting lateral and underlying surfaces,.in combination with a lubricant-delivering nozzle having an opening in theend thereotl to admit said end of said part inhaving al lubricant-receiving l ou cluding the polygonal portion thereof, said opening shapedand said end of said nozzle chambered to permit turning of said nozzle relative to said polygonal portion While said i polygonal portion overlies portions of the 7. A lubricating system comprising, inv

combination, a lubricant-receiving part having an opening in the end thereof, projections from said part adjacent said end, in combination with a lubricant-delivering nozzleV having an opening in the end thereof las shaped to admit said end of said art and said projections, said nozzle cham red to permit turning of said nozzle relative to said projections when the latter are entered in said nozzle, so that said projections overlie locking portions of said nozzle, a sealing part carried by said nozzle and a' vprojection- -engaging part carried by said nozzle and connected to said sealing part, said projection-engaging part permitting turning of said nozzle to lock said nozzle to said lubricant-receiving part while said sealing part remains stationary, rotativel considered, relative to said end of said lu ricant-receiving part.

8.'A lubricating system comprising, in combination, a lubricant-receiving art having an opening in the end thereo projections from said part adjacent said end, in combination with a lubricant-delivering nozzle having an opening in the end thereof shaped to admit said end of said part and said projections, said nozzle shaped to permit turning of said nozzle relative to said projections when the latter are .entered in said nozzle, so that said projections overlie locking portions of said nozzle, a projection-engaging part carriedY by said nozzle and engaging said projections when said nozzle is turned relative to said lubricantreceiving part, said projection-engaging part remaining stationary relative to the lubricant-receiving part during a portion at least of the rotative movement of the nozzle relative to said lubricant-receiving art, and a nozzle-valve the opening and clbsing of which is actuated by the turning of a part connected to said nozzle relative to said projection-engaging part.

9. A lubricating system comprising, in combination, a lubricant-receiving part having an opening in the end thereof and pro- 'ections from said part adjacent said end, 1n combination with a lubricant-delivering nozzle having an opening in the end thereof sha ed. to admit said end of said art and sai projections, said nozzle shape to permit turning of said nozzle relative to said projections when the latter are entered in said nozzle, so that said projections overlie locking portions of said nozzle, a projectionengaglng part carried by said nozzle and engaging said projections-when said nozzle is turned relative to said lubricant-receiving part, said projection-engaging part remainmg stationary relative to the lubricant-receiving part during a portion at least of the rotative movement of the nozzle relative to 'tion of a lubricant-receiving member prosaid lubricant-receiving part, and a rotary valve in said nozzle the opening and closing of which is actuated by the turning of a part connected to said nozzle relative to said projection-engaging part. n

A10. A lubricating system comprisinv, in combination, a lubricant-receiving part av- 'said end of said ing an opening in the end thereof, projections adjacent said end, in combination with a lubricant-delivering nozzle having an opening inthe end thereof shaped to admit said end of said part and said projections, said nozzle shaped to permitturning thereof rciative to said projections when the latter are entered in said nozzle, s o that said projections overlie locking portions of saidl nozzle, a sealing washer carried by said nozzle, a sealing washer carrying part in said nozzle, said nozzle rotative relative thereto, stop means between said sealing washer carrying part and-said nozzle for limiting the extent of rotative movement of said nozzle relative to said sealing Washer carrying part, and means between said sealing washer carrying part and said lubricant-receiving part for holding said sealing washer carrying part stationary, rotatively considered, relative to said lubricant-receiving part during at least a portioniof the rotation of said nozzle relative to said lubricant'receiving part.

11. A4 lubricating system comprising, in combination, a lubricant-receiving part havv ing an opening in the end thereof, projections adjacent said end, in combination with a lubricant-delivering nozzle having an opening in the end-thereof shaped to admit art and said projections, said nozzle shape to ermit turning thereof relative to said projections when the latter are entered in said nozzle, so that said projections overlie locking `Lportions of said nozzle, a sealing Washer carried by said nozzle, al sealing Washer carrying part in said nozzle, said nozzle rotative relative thereto, stop means between said sealing washer carrying part and -said nozzle for limiting the extent of rotative movement of said nozzle relative to said sealing washer carrying part, means between said sealing washer carrying part and said lubricant-receiving art for olding said sealing washer carrying part stationary, rotatively considered, relative to said lubricant-receiving part during at least a portion of the rotationof said nozzle relative to said lubricant-receiving part, and valve means connected to said nozzle and connections for opening said valve means by rotative movement in the direction which connects said nozzle and'said lubricant-receiving part and conversely for closing said valve means by rotative movement in the direction which disconnects said nozzle and said lubricant-receiving part.

12. In -a lubricating system, ythe combinaviding lateral projections, a lubricant-delivering member comprising an end portion having an opening therein to receive the end of the lubricant-receiving member and presenting interior flanges to be overlain by said projections when said end portion is turned relative to said lubricant-receiving member, and a part within said end portion held against turning movement by said lateral projections during turning movement of saidend portion.

13. In a lubricating system, the combina'- tion of a lubricant-receiving member providing lateral projections, a lubricant-delivering member comprising an end portion having an Vopening therein to receive the end of the lubricant-receiving member and presenting interior flangesV to be overlain by said projections when said end portion is turned relative to said lubricant-receiving member, and a part Within said end portion held against 'turning movement during turning movement of said end portion, said part carryinga sealing element for sealing the joint at the end of said lubricant-receiving member.

14. In a lubricating system, the combination of a lubricant-receiving member providing lateral projections, a lubricant-delivering member comprising an end portion having an opening therein to receive `the end of the lubricant-receiving member and presenting interior flanges to be overlain by said projections when said end portion is turned relative to said lubricant-receiving member, a part within said end portion carrying a sealing element for sealing the joint at the end of said lubricant-receiving member and means fitting over said lateral projections to oppose turning movement of said part when said` end portion is turned.

15. In a lubricating system, the combination of a lubricant-receiving member provding lateral projections, a lubricant-delivering member comprising an end portion having an opening therein to receive the end of the lubricant-receiving member and presenting interior flanges to be overlain by said projections when said end portion is turned relative to said lubricant-receivingmember, and a partwithin said end portion held against turning movement during turning movement of said end portion, a sealing element carried by said part for sealing the joint at the end of said lubricant-receiving member, said sealing element lubricantpressed 'toward said lubricant-receiving member.

16. In a lubricating system, the combination of a lubricant-receiving member providing lateral projections, a lubricant-delivering member comprising an end portion having an opening therein to receive the end of the lubricant-receiving member and presenting interior flanges to be overlain by said projections when said end portion is turned relatlveto said lubricant-receiving member, a sealing part within said end por- Y tion held against turning movement during turning'movement of said end portion, valve,l means and valve-operating `means actuatedby relative turning movement between said sealing part and a cooperating rotatable part.

17. In a lubricating system, the combination of a lubricant-receiving member providing lateral projections, a lubricant-delivering member comprising an end portion having an opening therein to receive the end of the lubricant-receiving member and presenting interior anges to be overlain by said projections when said end portion is turned relative to said lubricant-receiving member, sealingmeans and valve means Within said end portion, said sealing means engageable With the lateral projections and providing a seal against the end of the lubricant-receiving member..

18. In a lubricating system, the combination of a lubricant-receiving member providing lateral projections, a lubricant-delivering member comprising an end portion having an opening therein to receive the end ot' the lubricant-receiving member and presenting interior flanges to be overlain by said projections when said end portion is lturned relative to said lubricant-receiving member, sealing means and valve means Within saidend portion, said sealing means held against rotation by said projections, and said valve means partly held against rotation with said end portion and partly mounted for turning movement therewith.

19. In a lubricating system, the combination of a nipple including a body portion having a lubricant-receiving opening at one end, an enlarged portion on said body portion and presenting a plurality of symmetrically arranged, extended, lateral and underlying surtaces and a lubricant-delivering member having an opening in the) end thereof generally corresponding to the cross-sectional shape of said enlarged portion and interiorly chambered to present interior flanges to be overlain by said underlying surfaces whensaid end portion is turned relative to said nipple and a sealing part for engagement with the end of said nipple andl secured against substantial axial movement relative to said lubricant-delivering member.

20. In a lubricating-system, the combination of a nipple 'including a body portion having a lubricant-receiving opening at one end, an enlarged portion on said body portion and presenting a plurality of symmetrically arranged, extended, lateral and under i lying surfaces, a lubricant-delivering member having an opening in the endthereof vgenerally corresponding to the cross-sectionliverin -mem'ber, said means located within said de ivering member and presenting surfaces bearing a ainst` said lateral surfaces of said enlarg g portion of said nipple to plrevent turning thereof relative to the nipe. a 21. In a lubricatin system, the combination of a nipple including a body portion having a lubricant-receiving opening at one end, an enlarged portion on said body portion and presenting a lurality of symmetrically arranged, exten ed, lateral and underlying1 surfaces, a lubricant-delivering member aving an opening in the end thereof generally corresponding to the cross-sectional shape of said enlarged portion and interiorly chambered to present interior flanges to be overlain by said underlying surfaces when said end portion is turned relative to said nipple, and means within said end of said delivering member, mounted for turning movement relative thereto and presenting surfaces bearing against said lateral surfaces of said enlarged portion of said nipple, said means .limiting turning movement between said nipple and said delivering member.

22,. In a lubricating system, the combination of a nipple including a body portion having a lubrlcant-receiving opening at one end, an enlarged portion on said body portion and presenting a lurality of symmetrically arranged, exten ed lateral and underlyingl surfaces, a lubricant-delivering member aving an opening in the end thereof generally corresponding to the cross-sectional shape of said enlarged portion and interiorly chambered to present interior flanges to be overlain `by said underlying surfaces when said end portion is Iturne relative to said nipple, a valve controlling discharge of lubricant from said lubricantdelivering member, and means within said end of said delivering member, mounted for turning movement relative thereto and presenting surfaces bearing against said lateral surfaces of said enlarged portion of said nipple, said means actuating by turning movement relative to said end the opening and closing of said valve.

23. In a lubricating system, the combination of a nipple including a body portion having a lubricant-receiving opening, at one end, an enlarged portion on said body portion and presenting a lurality of symmetrically arranged, exten ed, lateral and underlying surfaces, a lubricant-delivering member having an opening in the end thereof generally corresponding to the cross-sectional shape of said enlarged portion and interiorly chambered to present interior flanges to be overlain by said underlying surfaces when said end portion is turnedrelative to said nipple, a valve controlling discharge of lubricantl from said lubricantdelivering member, and means within said end of sald delivering member, mounted for turning movement relative thereto and presenting surfaces bearing against said lateral surfaces of said enlarged portion of said nipple, said means 'limlting turning movement between said nipple and said delivering member and said means actuating by turning movement relative to said end, the opening and closing of said valve..

24. Lubricating apparatus comprlsing, 1n combination, a lubricant-receiving nipple and a lubricant-expelling device providing a coupling having an axial opening to receive said nipple by direct axial entrance and interiorly chambered to ermit subsequent turning of said'device re ative to said nipple to effect the coupling operation, and valve means carried by said coupling and presenting a plurality of extensions for engagement with said nipple to provide for openinl of said valve.v

25. lubricating system comprising a lubricant-delivering nozzle and a lubricantreceiving nipple, interlocking means for coupling said nozzle. and nipple by axial telescoping and rotary movement, sealing means in said nozzle for pressin against said nipple to form a lubricant-tlght seal, and means for preventing rotation of said sealing means with respect to said nipple when pressed against said nipple.

26. A lubricating system comprising a lubricant-delivering nozzle and a lubricantreceiving ni ple, interlocking means for coupling sai nozzle and nipple by axial telescoping and rotary movement, means in said nozzle having limited axial and rotar movement and locked a ainst rotation wit respect to said nipple y said axial telescoping movement, a sealing member carried by said locked means for sealing contact with said nipple, and valve means actuated by rotation of said nozzle with respect to said locked means for opening and closing a passage through said nozzle.

27. A. lubricating s stem comprising a lubricant compressor aving a elivering nozzle connected thereto and a lubricant-receiving nipple, cou ling means requiring axial telescoping an subse uent rotation to couple said nozzle and nipp e, sealing means operatively juxtaposed by said axial movement, an rotary valve means opened by said subsequent rotation.

28. A lubricating s stem com rising a lubricant compresser aving a elivering nozzle connected thereto and a lubricant-receiving nipple, couplin means requiring axial telescoping and su se uent rotation to couple said nozzle and nipp e, sealing means operatively juxtaposed by said-axial movement, valve means opened Aby said subsequent rotation, and means for preventing rotation of said sealing means on saidnipple after sealing.

29. Lubricating apparatus comprising a lubricant gun having a discharge nozzle presenting a lubricant-pressed sealing part for engagement against the'end of a lubricant receivingr nipple, a rotary valve co-operating therewith, and a coupling for engagement with a lubricant receiving nipple presenting coupling projections. 'y

30. Lubricating apparatus comprising a lubricant expelling device presenting a nozzle having a generally polygonal opening in the end thereof for engagement over a lubricant receiving element presenting a portion generally polygonal in cross section and including projecting portions, flanges adjacent said opening adapted to underlie the projections when said nozzle is turned relative thereto, said nozzle presenting a rotary valve having ports adapted' to be brought into and out of alignmentjwith each other. In testimony whereof, we have signed our names to this specification.

HOWARD-J. MURPHY. f MOSES F. CARR. 

